Iodine allergy test

The iodine allergy test is a commonly used test method for allergic reactions in the kidney, gallbladder, bladder, bronchus, cardiovascular, and cerebral angiography.

Basic Information

Specialist classification: skin examination classification: immune examination

Applicable gender: whether men and women apply fasting: not fasting

Reminder: Before the 1-2 days before the angiography, the allergy test must be done first, and the negative one can be used for iodine angiography. Normal value

The allergy test was negative.

Clinical significance

Abnormal results:

(1) After oral administration, there are symptoms such as numbness, dizziness, palpitation, nausea, vomiting, and urticaria.

(B) Intradermal injection of local red, swollen, lumps, diameter more than 1cm is positive.

(C) intravenous injection of allergic reactions with penicillin.

People who need to be examined for angiography need to have an iodine allergy test first.


Inappropriate people: those who are positive for allergy tests first.

Pre-examination contraindications: Allergic tests must be performed 1-2 days before the angiography, and negative ones can be used for iodine angiography.

Requirements for examination: a small number of patients with negative allergy test, but an allergic reaction occurs when iodine contrast agent is injected, so it is necessary to prepare emergency medicine for angiography and treat penicillin.

Inspection process

experiment method:

(A) oral method: oral 5% -10% potassium iodide 5ml, 3 times a day for a total of 3 days, observe the results.

(B) intradermal injection method: take iodine contrast agent 0.1ml for intradermal injection, observe the test results after 20 minutes.

(C) intravenous injection method: take 1ml of iodine contrast agent (30% diatrizoate 1ml), slowly injected intravenously, observe the test results after 5-10 minutes.

Before the intravenous injection of the contrast agent, the intradermal injection method must be performed, followed by intravenous injection. If it is negative, the iodine angiography can be performed.

Not suitable for the crowd

Previously tested positive for allergy tests.

Adverse reactions and risks

There are no related complications and hazards.